829.41% is the change from 85 to 790
Calculation steps:
[( 790 - 85 ) ÷ 85] x 100 = 829.41%
Formula
Percentage change = [(790 - 85) / 85] x 100
Subtract the new number by the original number
790 - 85 = 705
705 ÷ 85 = 8.294117647058824
8.294117647058824 x 100 = 829.41%